Make the hit counter persistently survive service restarts

[rofrano]

As a User
I need the hit counter to persist the last known count
So that I don't loose track of the count after the service is restarted

Assumptions

• We will use Redis as the persistent store
• A Redis service from Bluemix should be used

Acceptance Criteria

Given the hit counter is at 1
When I advance the hit counter to 2
And I restart the hit counter services
And I call the hit counter URL
Then I should see 3 returned from the service